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Playing Slot Machines

A. Antonova
Since 2017, Anisia has been sharing her iGaming expertise with readers of CasinoGamesPro.com. Her work covers comprehensive reviews of casino favourites like slots, roulette, blackjack, and video poker, along with thorough assessments of payment options, mobile casino platforms, and leading online casinos.
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Slots 101: How to Excel at Playing Slot Machines

Playing Slot MachinesSlots have become the epitome of casino games and enjoy tremendous popularity among millions of players worldwide. You can hardly walk into a land-based gambling establishment without noticing the trademark flashing lights or hearing the slots’ bells. There is no secret to slots’ popularity. This type of game is easy to master, as there are no complex rules or betting options to remember, making it suitable even for those who have never spun the reels before. Furthermore, no particular skill set is required to win, and potentially win big. With a little help from Lady Luck, anyone can pocket a substantial payout.

However, becoming familiar with how slots work, how they pay out, and which features they offer can help players make more informed decisions and manage their play more effectively. If you have never spun the reels before, take a look at the following article, where we explain how slots work, how to play them, and which features are most important.

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How Online Slots Work

How Online Slots WorkThanks to rapid technological advancements over recent decades, slots have made their way into the catalogs of some of the most reputable online casinos in the world. Fans can now enjoy their favorite game of chance on a desktop computer or a smartphone. Online slots are based on roughly the same principles as the machines in land-based casinos.

Typically, there are three to five reels containing a specific number of symbols. When the player hits the Spin button, the reels are set in motion. If a winning combination of symbols lines up on one of the paylines, the slot awards a payout. Every online slot runs on a program called a Random Number Generator, abbreviated as RNG. Using algorithms, the RNG performs calculations at an astonishing pace and generates thousands of number sequences per second to determine which symbols appear on the reels.

The outcome is decided at the moment the player hits the Spin button. Players see the reels spinning, which adds anticipation, but the actual result of the spin has already been determined by the RNG. The reels do not need to spin for an outcome to be generated, but the animation adds to the excitement.

Another important point is that the RNG continually generates number sequences while the game is active, even when no one is pressing the Spin button. This means that the outcome of each spin is random and unpredictable.

A given spin does not affect the outcome of subsequent spins, nor is it influenced by the spins that preceded it. This is the most important rule to remember before you hit the Spin button.

How to Play Online Slots

How to Play Online SlotsAs mentioned earlier, playing online slots does not require particular skills, making this type of game suitable for online casino novices. However, there are a few important things to remember before you start placing real-money bets.

The first thing to consider is the number of paylines. The more paylines a given online slot has, the greater the number of winning combinations you can potentially hit. In the past, slots often had a single payline running across the middle of the reels. The reels are the vertical sections on the screen that rotate each time players press the Spin button.

Many online slots boast 10, 25, 30, 40, 50, or sometimes even 100 paylines. These can run diagonally, horizontally, or vertically, or they may take on zigzag and V shapes. Players should also check the slot’s paytable, which contains valuable information about the paylines, Return to Player percentage (RTP), payouts for winning combinations, and special features.

The player then selects the paylines they wish to activate, adjusts the coin value, and chooses how many coins to bet per active payline. Available coin denominations differ between slots, but typical options include $0.01, $0.02, $0.05, $0.10, $0.25, $0.50, and $1.00. Once you have adjusted the number of lines, coin value, and number of coins per line, simply hit the Spin button and wait for the outcome. If you win, the amount will be credited to your casino account balance right away.

The number of active paylines determines the overall amount of the bet. For instance, if you have activated 11 out of 25 paylines and bet two coins of $0.10 per line, you are effectively paying $2.20 per spin. Keep in mind that some online slots have fixed paylines, meaning players cannot adjust the number of lines they bet on. They must cover all available paylines.

Players can also place the maximum bet on an online slot by clicking the Bet Max button. If you wish to play at a faster pace, you can turn on the Autoplay feature when it is available. You should first adjust the number of coins and their value per active payline, then select the number of automatic spins to play, which usually ranges from 5 to 100.

Autoplay is rarely a good idea because you may end up losing money at a rapid pace.

Types of Online Slots

Types of Online SlotsOne of the biggest advantages of spinning the reels online is the vast selection of slot titles, each with its own theme and features. There is something to suit every type of player, whether they prefer classic fruit slots or more advanced video slots. The main types of slots available online are listed below.

Classic or 3-reel Slots

Classic or 3-reel SlotsThis is the prototype of all slot machines and comes closest to what Charles Fey originally created. As the name suggests, the number of reels is limited to three. Players typically have fewer betting options, as 3-reel slots often feature a single payline stretching across the middle of the reels. However, some online slot titles with three reels may offer three or even five paylines.

This type of slot is considered suitable for inexperienced players because it is simpler and easier to understand. The limited number of reels and paylines makes the gameplay easy to follow. Players may hit winning combinations less frequently, but the payouts can be larger when they do. Popular examples of classic slots include Microgaming’s Fruit Fiesta and Playtech’s Funky Monkey.

Multi-Payline Video Slots

Multi-Payline Video SlotsMulti-payline slots typically have five reels, which are vertical sections set in motion whenever the Spin button is pressed. However, some online titles use seven reels or more. The greater number of reels allows for more winning combinations or paylines, which is one reason these variations are popular among slot fans.

Greater winning potential is not the only advantage multi-payline slots offer. Players can also benefit from enhanced graphics, sound effects, and special features, including bonus spins, bonus games, multipliers, wilds, and scatter symbols.

Depending on their design, slots with more paylines may pay more frequently, although individual payouts are often smaller. The special features incorporated into multi-payline slots can also affect their payout potential. Most 5-reel slots are video slots, with crisp animations and user-friendly interfaces that add to the excitement.

3D Slots

3D Slots3D slots are a visually advanced form of video slot. There are few differences in terms of gameplay and interface, as players can still bet on multiple paylines, adjust their coin number and denomination, and activate the Autoplay feature. However, once you load a 3D slot, you will immediately notice the difference in visual and audio quality.

3D slots boast detailed visuals with a sense of depth, while enhanced sound effects further contribute to the gaming experience. A 3D slot may start with a short animated clip that introduces players to the game’s theme and storyline. Additional animated sequences may follow when players hit winning combinations and the symbols on the reels come to life. These games may also include vividly animated features such as free spins, interactive bonus games, wilds, and scatters.

The storylines can also be more complex than those of standard video slots. Some 3D titles feature several levels of play. As slot fans progress through the levels and complete different achievements, they may be able to tailor the game’s bonus rounds to their individual preferences.

Progressive Slots

Progressive SlotsThese are among the most sought-after slot titles in online casinos, and there is a good reason why. Such slots have large progressive jackpots attached to them, which increase incrementally. Sometimes, the jackpot is linked across several casinos using the same software network, allowing it to reach seven-figure sums. Other progressive slots accumulate their jackpots within a single casino.

A small percentage of each participating player’s bet goes toward the jackpot. The contribution to the progressive jackpot is built into the wager, so players do not need to make an additional side bet to qualify for the prize. Each progressive slot has a jackpot meter attached to it, enabling players to track the amount currently accumulated.

However, there are two important things to consider before playing a progressive slot. First, players may be required to bet the maximum amount per spin and activate all available paylines to become eligible for the jackpot. If this requirement applies, landing the symbol combination that triggers the prize will not award the jackpot unless the maximum amount was wagered. Second, because a large amount of money is reserved for the jackpot, progressive slots may offer fewer regular wins. If you are not aiming for the jackpot, you may prefer to skip progressive slots.

Some popular progressive slots available online include Microgaming’s Mega Moolah, NetEnt’s Mega Fortune, and the slots tied to Games Global’s WowPot! progressive jackpot.

All Ways Win Slots

All Ways Win SlotsAll Ways Win slots have a unique payout structure because they lack conventional paylines. Instead, the games pay out when three or more matching symbols land on adjacent reels, starting from left to right. A classic 3×5 reel grid can produce as many as 243 winning ways (3 x 3 x 3 x 3 x 3 = 243).

A key benefit of this format is the large number of possible winning combinations. Another advantage concerns the cost per spin. A standard line-based slot requires you to cover each active payline with a bet. Otherwise, a winning combination will not pay even if it aligns on an inactive line.

This is not the case with All Ways Win games, where you may have 243 opportunities to win without paying for each one separately. One example is Microgaming’s Immortal Romance, where you play 30 credits of your chosen denomination on each spin. Playing a 30-line slot would cost the same number of credits while offering fewer winning opportunities.

Some software developers design slots with 720 ways to win, where each reel contains a different number of symbols. For instance, the reel grid of IGT’s popular release Siberian Storm has the following configuration: 3 x 4 x 5 x 4 x 3, which creates 720 winning ways. Some video slots contain four symbols on each of their five reels, allowing for 1,024 ways to win (4 x 4 x 4 x 4 x 4 = 1,024). Studios like NetEnt also have releases with 5 x 5 x 5 x 5 x 5 grids, where the number of winning opportunities rises to 3,125 ways.

Popular 243 Ways SlotsPopular 720 Ways SlotsPopular 1,024 Ways SlotsPopular 3,125 Ways Slots
  • Immortal Romance (Microgaming)
  • Twin Spin (NetEnt)
  • Game of Thrones (Microgaming)
  • Jurassic Park (Microgaming)
  • Razortooth (Quickspin)
  • Siberian Storm (IGT)
  • Wild Rockets (NetEnt)
  • Day of the Dead (IGT)
  • Candy Dreams (Microgaming)
  • Prowling Panther (IGT)
  • Crown of Egypt (IGT)
  • Terminator 2 (Microgaming)
  • Silver Lioness (Microgaming)
  • Rage of the Seas (NetEnt)
  • Lucky Panda (Playtech)
  • Dolphin Coast (Microgaming)
  • Reel Rush (NetEnt)
  • Buster Hammer Carnival (Yggdrasil)
  • Mermaid’s Pearls (RTG)
  • Valley of the Gods (Yggdrasil)

Megaways Slots

Australian software studio Big Time Gaming pioneered the Megaways payout mechanic and later licensed it to other major slot suppliers, including NetEnt and Microgaming. These games have become popular across online casinos for several reasons.

Much of their success comes from the innovative payout structure they use. Megaways slots play on six reels rather than five, and some have additional horizontal reels. Instead of using conventional paylines, Megaways slots work similarly to their All Ways counterparts, paying for matching symbols on adjacent reels.

One major difference is that the number of winning ways changes on each spin. The reels are shape-shifting and randomly produce between two and seven symbols per reel during each round. A winning combination triggers a reaction in which the matching symbols collapse and make room for new icons to fall into place.

The maximum reel configuration can produce tens of thousands of ways to win, depending on the game. Slots that use this structure may also offer features such as enhanced free spins, bonus games, wilds, and scatters. On the downside, many Megaways slots have greater volatility, which can result in larger balance swings and makes careful bet sizing important.

Recommended Megaways Slots:
  • Royal Mint by Big Time Gaming (117,649 ways to win)
  • White Rabbit by Big Time Gaming (248,832 ways to win)
  • Dazzle Me by NetEnt (99,225 ways to win)
  • Ancient Fortunes: Poseidon by Microgaming (117,649 ways to win)
  • Buffalo King by Pragmatic Play (200,704 ways to win)

Special Features of Online Slots

Special Features of Online SlotsWhen choosing an online slot to play for real money, players should review its payouts and special features, as these can shape the gameplay and affect payout potential. Some of the most common online slot features are described below.

Multipliers

MultipliersThese are special symbols that multiply the amount awarded by a given winning combination. For instance, if your initial winnings amount to $5 and a 3x multiplier is part of the winning combination, the amount will be multiplied by three, resulting in a total payout of $15 for that spin. Multipliers commonly double or triple players’ winnings, but some slot titles feature symbols that can multiply a win by 10x, 100x, or even 1,000x.

It is important to mention that multiplier symbols are less common during base play. They are often incorporated into free-spin rounds. Some slot titles offer greater player interaction by allowing players to select their multiplier amount from several hidden icons.

Some video slots also have wild symbols that function as multipliers. These symbols can complete winning combinations while doubling or tripling the resulting payout.

Wild Symbols

Slots Wild SymbolWilds are among the symbols slot fans hope to see on the reels because they can carry significant winning potential. They work in much the same way as jokers in some variations of poker. In other words, wild symbols may help players complete a winning combination on a given payline by substituting for other designated symbols on the reels. For this to happen, the wild symbols must line up on a particular payline. Depending on the slot, the wild may be the highest-paying symbol or have no value of its own.

There are many different subtypes of wilds. Some expand to cover the entire reel, transforming each symbol from top to bottom into a wild. Others “stick” or remain in place for a predetermined number of spins, boosting players’ chances of collecting a payout. There are also shifting wilds that change their positions on the reels during subsequent spins. Stacked wilds are also worth mentioning, as they line up on top of one another and may cover an entire reel.

Scatter Symbols

catter SymbolScatters are another valuable feature slot fans look for. As mentioned earlier, slots typically pay out whenever you land a particular combination of symbols on an active payline. Scatters work differently because they do not have to line up on an active payline to award a payout. They may pay when they appear anywhere on the reels.

Whenever a specific number of scatters land on the reels, they may unlock an additional feature. This could be an interactive bonus game with prizes or a predetermined number of free spins. Remember, scatters are game-specific, and their functions can vary greatly depending on the slot, which is why you should always check the paytable in advance.

Bonus Games

Bonus GamesInteractive bonus games are usually triggered by special bonus symbols listed on the paytable or by scatters. Occasionally, they can also be unlocked by wilds, depending on the game. These bonus games add excitement to spinning the reels and can award additional prizes. Some bonus games involve an element of skill, though most are based on the “pick me” principle. For instance, players may need to select one or more hidden items that correspond to specific cash prizes.

Free Spins

Free SpinsThis feature should not be confused with the free spins awarded by online casino operators. In this case, the bonus spins are built into the slot itself. Free spins are commonly triggered when the player lands a specific number of scatter symbols on the reels. Occasionally, a round of free spins can be triggered at the end of a bonus game.

Some free spins have multipliers attached to the winning combinations players land during the bonus round. The multiplier amount differs from one slot to another. As a rule, the free spins use the bet amount the player selected before triggering them. Depending on the slot, free spins can be retriggered during the current bonus round, potentially resulting in additional payouts.

Respins

RespinsThe respin feature available in some online games bears some resemblance to free spins. The difference is that one or more reels or reel positions remain locked in place while the others respin one or several times. Once the reels have respun, the player may receive a monetary prize before a new round begins. In some cases, the player has the option to respin one or more reels again.

Some respins cost extra. The exact amount varies between games and is typically displayed next to each reel. It may depend on the symbols that appeared during the previous spin. For example, if you are one symbol short of reaching five of a kind, you may have to pay a higher premium to respin the reel.

Some slots offer free respins that activate when a specific symbol or symbol combination appears. In such cases, the reels will respin one or more times at no additional cost. NetEnt’s Starburst slot is one example of how this feature works. When the Starburst logo symbol lands simultaneously on the second, third, and fourth reels, it expands to cover an entire reel and triggers a free respin.

Cascading Reels

Cascading reels are popular among online slot fans because they can lead to multiple wins in succession. When a player forms a winning combination, they receive the corresponding payout, and the matching symbols disappear from the reels, allowing new icons to drop into place. The feature can be lucrative because it enables players to collect multiple payouts at no extra cost.

In most slots with cascading reels, this process continues until a cascade produces no new winning combination. Cascading reels are prominently featured in NetEnt’s Gonzo’s Quest slot, where players can also benefit from 1x, 2x, 3x, and 5x multipliers. The multiplier increases after each successive win and resets to 1x after a loss.

The Gamble Feature

The Gamble FeatureSome advanced video slots have an additional Gamble feature. Each time a player hits a winning combination, they may be given the opportunity to double their winnings by playing a side game. This game typically involves predicting the color of a face-down card or, in some cases, the outcome of a coin toss.

When a face-down card appears, the aim is to guess the color of its suit: red or black. If players guess correctly, their winnings are doubled. If they make an incorrect prediction, they lose the amount won on their last spin.

FAQ

The truth is, there’s no secret strategy to hitting big on slot machines since they’re based on luck and run by Random Number Generators (RNGs). However, understanding the game’s key elements, like paylines, RTP, and betting strategies, can enhance your playing experience and potentially improve your chances of scoring a win. Remember, it’s all about having fun and playing responsibly!

Absolutely not! Reputable online slots operate on RNGs, ensuring each spin’s outcome is completely random and fair. Stick to licensed and regulated online casinos to guarantee the integrity and fairness of the slot games you’re playing. These casinos are regularly audited to ensure compliance with strict gaming regulations.

Yes, progressive slots offer the chance for massive wins, sometimes reaching into the millions, because a fraction of every bet contributes to the jackpot pool. Remember, hitting the jackpot often requires max bets and a lot of luck, as the odds are similar to winning a lottery. It’s essential to play within your budget and always stop when you lose the entertainment factor.

Look for slots with high RTP (Return to Player) percentages for better long-term payouts. Consider the game’s volatility, themes, bonus features, and your personal playing style. Trying games in free mode can help you find your favorites without risking real money.

Online slots offer convenience, a wider variety of games, and often higher RTPs than land-based slots. Since many online slots can be played in a demo mode, you can even try out different titles before choosing which ones to play for real money. You’ll also find exclusive online bonuses and promotions to extend your playtime. Plus, you can enjoy playing from the comfort of your home or on the go with mobile options.

Not necessarily. While max bets are required for some jackpots and bonuses, it’s crucial to balance this with your overall budget and playing time. Even if you play a progressive slot, make sure that you place a maximum bet on every spin only if the slot requires the highest bet amount to qualify you for the jackpot prize. Betting max can lead to quicker losses, so adjust your bet sizes based on your bankroll and gaming goals.

Avoid chasing losses, betting beyond your budget, and playing slots before you have explored their paylines and bet sizes. Also, neglecting to read the game’s rules and paytable can lead to missed opportunities for bonuses or higher payouts. Playing for fun, setting limits, and knowing when to take a break are key elements of an enjoyable slot experience.

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